Key: Volcanic Rocks

• Tertiary and Quaternary
  • Qv Quaternary volcanic rocks
  • Qf Quaternary felsic volcanic rocks
  • uTa Upper Tertiary andesite
  • Tpv Pliocene volcanic rocks
  • Tpf Pliocene felsic volcanic rocks
  • Tmv Miocene volcanic rocks
  • Tmf Miocene felsic volcanic rocks
  • lTv Lower Tertiary volcanic rocks
  • lTf Lower Tertiary felsic volcanic rocks
  • lTa Lower Tertiary andesite
  • Teb Eocene marine pillow basalts
• Mesozoic
  • Kv Cretaceous volcanic rocks
  • lMzv Lower Mesozoic volcanic rocks
  • Trv mafic lava interbedded in Triassic Newark Group
• Paleozoic
  • Dv Devonian volcanic rocks
  • DSv Devonian and Silurian volcanic rocks
  • Sv Silurian volcanic rocks
  • Ov Ordovician volcanic rocks
  • Cv Cambrian volcanic rocks
• Precambrian
  • Zv volcanic rocks
  • Yv volcanic rocks
  • Xv volcanic rocks
  • Wv volcanic rocks